Hand-pump for freeing water from its contained iron.



P. B. K. SGHUBBRT & G. BURGER.

HAND PUMP FOR FRBEING WATER FROM ITS CONTAINED IRON.

APPLICATION I'ILED MAY 4, 1910.

1,006,010, Patented Oct. 17, 1911.

COLUMBIA PLANO-GRAPH C0,, WASHINGTON, u. c.

tinrrsn srarns ra'rsivr orrion.

FRANZ BERNHARD KARL SCHUBERI AND GEORG BURGER, OF HAMBURG, GERMANY,

ASSIGNORS TO THE FIRM OF DESENISS & J'ACOBI AKTIENGESELLSCHAFT, OF HAM-BURG, GERMANY.

HAND-PUMP FOR FREEZING WATER FROM ITS CONTAINED IRON.

To all whom it may concern:

Be it known that we, FRANZ BERNHARD KARL SCI-PUBERT, a subject of theGrand Duke of Hesse, and Gross Bunsen, a sub ject of the King ofBavaria, both residing at Hamburg, in the German Empire, whosepost-oflice addresses are 63 Hammerlandstrasse and 27 Beim Strohhause,respec tively, have invented certain new and useful Improvements inHand-Pumps for Freeing Water from Its Contained Iron, of which thefollowing is a specification.

This invention relates to improvements in hand-pumps, that is to say,pumps worked by a hand-lever and which are designed to utilize the wellknown process of freeing water from its content of iron by forcing thewater with an excess of air through a filter in which the ocher, formedby the oxidation of the dissolved iron, is precipitated.

In the hand-pumps heretofore employed a single-acting suction pump forthe water is arranged within the pumpwell while apart from this asingle-acting air-pump is fitted above within the standard or frame, inwhich the hand-lever is journaled. Both pumps are commonly connected bya single rod and pitman to the hand-lever in such a manner that onlifting both pump-pistons simultaneously, the air pressure forces thecheck valve within the piston of the airpump to open downward, wherebythe cylinder of the air pump is filled with air, while the water abovethe piston or bucket of the raw water pump is pressed into the filterwhich is arranged within the standard and which usually surrounds thecommon connecting rod of two pistons. On the downward stroke of thepistons, however, the water is enabled to pass the valve in the pistonof the water pump meanwhile lifted from its seat, and at the same timethe air beneath the air-pump-piston is pressed through a conduit intothe water within the discharge pipe of the water-pump. In this manner anexcessive amount of air may be added to the water over that required forthe oxidation of the iron dissolved in the water. Notwithstanding, thehand pumps, as described, show the drawback, that, owing to thevariation in the oscillatory movement of the hand-lever, it may occurthat proportionately little or no air will be Specification of LettersPatent.

Application filed May a, 1910.

Patented Get. 117, 1911. Serial No. 559,356.

pressed into the water, since on a diminished degree of oscillation ofthe hand-lever during the downward stroke of the pistons the air withinthe air pump will not be suflioiently compressed, in order to thoroughlypenetrate the water above the piston in the pump-cylinder, wnile on theupward stroke of the piston the space below the same will not besuiiiciently evacuated for lifting the piston-valve and thus admittingfresh air to enter the air-cylinder. At all events the proportion of thewaterand air-mixture varies in accordance with the degree of oscillationof the hand-lever.

Now our invention has for its object to do away with the said drawback,and this we obtain by arranging two pump-cylinders of different diameterone above the other in such a manner, that the upper larger cylinder,serving as air-compressor, is designed to directly form the continuationof the lower smaller water-pump cylinder, and that for each pumpcylinder a piston with an upwardly opening "valve is arranged upon apiston-rod common to both pumps, and between both pistons, close abovethe upper end of the lower, smaller pump-cylinder, a snifiie or sniftingvalve is provided. At the foot of the water-pump within a chamber, fromwhich the suction pipe extends below the water level in the well, asuitable suction valve is provided.

The nature of our invention and the manner in which the same may becarried into effect may be explained by reference to the accompanyingdrawing, in which- Figure 1, is a vertical section through the pumphousing or standard inclosing the operating parts of the pump, and Fig.2 is a like section through the pump within the pump well.

The pump consists of the lower narrower cylinder 1 and the upper widercylinder 2; the latter being provided at its lower end with a branch 3to which is attached a snifting-valve 4. To the lower end of thecylinder 1 is attached the chamber 6 of the suction-valve 5 of the waterpump suspending the suction pipe 7 which extends below the water levelwithin the pumpwell. The bucket or piston 8 is provided at its upperface with an ordinary disk-valve 9 and likewise the upper, wider pistonor bucket 10 with a disk-valve of india-rubber, vulcanized fiber orsimilar material. Both pistons are firmly attached to the common pis tonrod 12. The cylinder 2 of the air pump is provided with a cap or dome 13to which the lower end of the discharge-pipe 14 of the compressed air isconnected. This pipe extends upward into the standard or housing whichconsists of the socket 15, the hollow shaft or column 16, thecover-plate 17 and the head piece 18, in which the hand-lever 19 isjournaled in the usual manner. Upon the bottom or base-plate of thecolumn 16 the tube 22 is secured and into the centrally arranged socket23 at the lower end of this tube is tightly screwed the upper end of thedischarge pipe 14, which terminates at the lower end of a short standpipe 24, communicating through one or more apertures 25 with theinterior of the surrounding tube 22. l/Vith the aid of a ferrule orsocket 26 the stand pipe 24 is screwed to a guide 27 for the piston rod12, which terminates in a crosshead 29 sliding within a guide 28. Thecrosshead however is connected by a pitman 20 to the short arm of thehandlever 19 extending into the interior of and supported by thehead-piece 18 of the pump standard. The guide 28 rests by means of aflange at its upper end upon the cover plate 17 to which it is fastenedin the usual manner by screw-bolts and nuts.

The annular space between the column 16 and the tube 22 is at the lowerand upper ends shut up by annular screens 30 and 31, respectively, whilethe vertical space between these screens is filled out with sand orother suitable filtering material.

On the upward oscillatory movement of thehand-lever 19 both thepump-pistons or buckets 8 and 10 descend and admit the water and themixture of water and air, respectively, by passing the lifted valves 9and 11 to enter the space above the said pistons, while on the downwardmovement of the hand-lever and the ascension of the pis tons the waterwithin the pump well, by passing the suction pipe 7 and the suctionvalve 5, enters the cylinder 1, and at the same time the water above thepiston 8 is lifted into the wider cylinder 2 while the ascending piston10 causes the outer air to be sucked up through the valve 4 in order tomix with the water entering from below. The mixture of water and airabove the piston 10, collected in the cylinder 2 during the precedingdownward stroke, is forced during the upward stroke of the pistonsthrough the discharge pipe 14, the apertures 25 of the stand pipe 24,the annular space within the tube 22 and the upper screen 31 into thefiltering material stored up within the annular space between the tube22 and the column 16 and while the oxidized iron sus pended in the wateris retained by the filtering material, the pure water entirely freedfrom iron, after having passed the lower screen 30, will flow offthrough the faucet 21.

It will be perceived from the foregoing, that, when both cylinders arefilled with water in the lowest position of the pistons, the waterwithin the lower, smaller cylinder above the bucket on the out-stroke ofthe pistons is forced into the upper larger cylinder. Seeing that thisquantity of water is only suflicient to partly fill the upper largercylinder, and that the piston of the latter during the filling period isalso ascending, a vacuum would occur within the space between bothpistons. This, however, is prevented by the valve 4 provided at thelower end of the branch 8, which admits a corresponding amount of air toenter the space between the two pistons and to mix with the watertherein contained. This amount of air is so much greater as the diameterof the two pistons differ from one another, and it is obvious that theamount of air sucked up will be at any time in due proportion to theamount of the water to be supplied by a given sized pump, that is tosay, that the proportion of the mixture of water and air will be thesame at any time, independent of the stroke of the pistons beingone-tenth or full.

Having fully described our invention, we claim 1. In a hand pump, thecombination with two cylinders of different capacities, a dischargepipe, a bucket in each cylinder, a piston rod common to both buckets, asnifting valve controlling the admission of air to the larger cylinder,an annular filter distanced from and surrounding the discharge pipeforming an annular chamber between the discharge pipe and filter, saidfilter and chamber communicating.

2. In a hand pump, the combination with a discharge pipe, a largecylinder at the lower end thereof and a smaller cylinder below thelarger cylinder, a bucket in each cylinder, a pump rod common to bothbuckets, a pump standard in the lower end of which the pipe discharges,an annular filter surrounding the discharge pipe to form an annularchamber between them, said annular chamber and filter communicating attheir upper ends, and a discharge at the lower end of the filter.

FRANZ BERNHARD KARL SOHUBERT. GEORG BURGER.

lVitnesses Max KAEMPFF, ERNEST H. L. MUMMENHQFF.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G. i

